mirror of https://github.com/pvnis/srsRAN_4G.git
You cannot select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
3.4 KiB
C
91 lines
3.4 KiB
C
/*
|
|
* Copyright 2013-2020 Software Radio Systems Limited
|
|
*
|
|
* This file is part of srsLTE.
|
|
*
|
|
* srsLTE is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Affero General Public License as
|
|
* published by the Free Software Foundation, either version 3 of
|
|
* the License, or (at your option) any later version.
|
|
*
|
|
* srsLTE is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Affero General Public License for more details.
|
|
*
|
|
* A copy of the GNU Affero General Public License can be found in
|
|
* the LICENSE file in the top-level directory of this distribution
|
|
* and at http://www.gnu.org/licenses/.
|
|
*
|
|
*/
|
|
|
|
/*!
|
|
* \file polar_encoder.h
|
|
* \brief Declaration of the polar encoder.
|
|
* \author Jesus Gomez (CTTC)
|
|
* \date 2020
|
|
*
|
|
* \copyright Software Radio Systems Limited
|
|
*
|
|
* 5G uses a polar encoder with maximum sizes \f$2^n\f$ with \f$n = 5,...,10\f$.
|
|
*
|
|
*/
|
|
|
|
#ifndef SRSLTE_POLAR_ENCODER_H
|
|
#define SRSLTE_POLAR_ENCODER_H
|
|
|
|
#include "srslte/config.h"
|
|
#include <stdint.h>
|
|
|
|
/*!
|
|
* Lists the different types of polar decoder.
|
|
*/
|
|
typedef enum SRSLTE_API {
|
|
SRSLTE_POLAR_ENCODER_PIPELINED = 0, /*!< \brief Non-optimized version of the pipelined polar encoder*/
|
|
SRSLTE_POLAR_ENCODER_AVX2 = 1, /*!< \brief SIMD implementation of the polar encoder */
|
|
} srslte_polar_encoder_type_t;
|
|
|
|
/*!
|
|
* \brief Describes a polar encoder.
|
|
*/
|
|
typedef struct srslte_polar_encoder_t {
|
|
void* ptr; /*!< \brief Pointer to the actual polar encoder structure. */
|
|
int (*encode)(void* ptr,
|
|
const uint8_t* input,
|
|
uint8_t* output,
|
|
const uint8_t code_size_log); /*!< \brief Pointer to the encoder function. */
|
|
void (*free)(void*); /*!< \brief Pointer to a "destructor". */
|
|
} srslte_polar_encoder_t;
|
|
|
|
/*!
|
|
* Initializes all the polar encoder variables according to the given code size.
|
|
* \param[out] q A pointer to the initialized polar encoder.
|
|
* \param[in] polar_encoder_type Polar encoder type.
|
|
* \param[in] code_size_log The \f$ log_2\f$ of the number of bits of the encoder input/output vector.
|
|
* \return An integer: 0 if the function executes correctly, -1 otherwise.
|
|
*/
|
|
SRSLTE_API int srslte_polar_encoder_init(srslte_polar_encoder_t* q,
|
|
srslte_polar_encoder_type_t polar_encoder_type,
|
|
uint8_t code_size_log);
|
|
|
|
/*!
|
|
* The polar encoder "destructor": it frees all the resources.
|
|
* \param[in, out] q A pointer to the dismantled encoder.
|
|
*/
|
|
SRSLTE_API void srslte_polar_encoder_free(srslte_polar_encoder_t* q);
|
|
|
|
/*!
|
|
* Encodes the input vector into a codeword with the specified polar encoder.
|
|
* \param[in] q A pointer to the desired polar encoder.
|
|
* \param[in] input The encoder input vector.
|
|
* \param[in] code_size_log The \f$ log_2\f$ of the number of bits of the encoder input/output vector.
|
|
* It cannot be larger than the maximum code_size_log specified in q.code_size_log of
|
|
* the srslte_polar_encoder_t structure.
|
|
* \param[out] output The encoder output vector.
|
|
* \return An integer: 0 if the function executes correctly, -1 otherwise.
|
|
*/
|
|
SRSLTE_API int
|
|
srslte_polar_encoder_encode(srslte_polar_encoder_t* q, const uint8_t* input, uint8_t* output, uint8_t code_size_log);
|
|
|
|
#endif // SRSLTE_POLAR_ENCODER_H
|